Power supply adapter and power supply system

1. A power supply adapter for supplying Direct Current power to a broadcast receiver that processes a broadcast signal, the power supply adapter comprising: a converter configured to generate the Direct Current power from Alternating Current power; a broadcast signal reception section configured to receive the broadcast signal; a mixer configured to mix the broadcast signal received by said broadcast signal reception section with an output from said converter; and a supply section configured to supply an output from said mixer to the broadcast receiver.

2. The power supply adapter according to claim 1 , further comprising: an amplification circuit configured to amplify the broadcast signal received by said broadcast signal reception section, wherein said mixer mixes an output from said amplification circuit with the output from said converter.

3. The power supply adapter according to claim 1 , wherein, said broadcast signal reception section is configured to receive broadcast signals in accordance with a plurality of different broadcasting systems, and said mixer mixes the broadcast signals in accordance with the plurality of broadcasting systems as received by said broadcast signal reception section with the output from said converter.

4. The power supply adapter according to claim 1 , wherein, said broadcast signal reception section receives the broadcast signal from an external antenna via a cable, and the power supply adapter further comprises an antenna DC power supply section configured to supply DC power for driving the antenna to the antenna via the cable, the cable being placed between and connecting said broadcast signal reception section and the antenna.

5. A power supply system, comprising: a broadcast receiver configured to process a broadcast signal; and a power supply adapter configured to supply DC power to said broadcast receiver, wherein said power supply adapter includes a converter configured to generate the DC power from AC power, a broadcast signal reception section configured to receive the broadcast signal, a mixer configured to mix the broadcast signal received by the broadcast signal reception section with an output from the converter, and a supply section configured to supply an output from the mixer to said broadcast receiver, and said broadcast receiver includes a splitting section configured to separate the DC power and the broadcast signal from an output from said power supply adapter.